Background: Self-report questionnaires play an important role as outcome measures in shoulder research. Having an estimate of the measurement error of these ...

The main aim of this study was to assess the reliability and validity of a food frequency questionnaire with 23 food groups (I-FFQ) among a sample of 9–11-year-old children from three different ...

Pedrelli P, Blais MA, Alpert JE, Shelton RC, Walker WSW, Fava M. Reliability and Validity of the Symptoms of Depression Questionnaire (SDQ). CNS Spectrums (in press).

Introduction: Objective clinical assessments should include patient-reported outcome measures. VascuQol is an established disease-specific questionnaire assessing the quality of life in patients with ...

Those of us in the business of psychological measurement use the terms reliability and validity a lot. You've probably seen those terms on the Psychology Today website (they appear thousands of times) ...

Abstract PURPOSE: To report the reliability and validity of the Functional Assessment of Cancer Therapy–Ovarian (FACT-O) in a consecutive series of outpatients with epithelial ovarian cancer. PATIENTS ...

Assessing the presence and degree of synovitis is the cornerstone of managing patients with arthritis. Ultrasound has been ...

Employers gauge a job candidate's ability to work and learn in an establishment through pre-employment assessments. To make a sound decision in the hiring process, companies should understand how to ...

The main findings of the present study were that the agreement, reliability and construct validity of the questionnaires examined are acceptable. Differences in agreement between the questionnaires ...

But what are reliability and validity exactly, how do we assess reliability and validity, and why are these properties of psychological tests so crucially important? In this and a following blog post, ...